3 Ñ TWO WEEKS AFTER THE BOMBINGS AT THE BOSTON MARATHON... KEY LAWMAKERS SAY THE SUSPECTS MAY NOT HAVE ACTED ENTIRELY ALONE. AUTHORITIES ARE SEARCHING FOR POTENTIAL SUSPECTS WHO MIGHT HAVE HELPED WITH THE BOMBS' DESIGN. 3 ONE NEW CLUE: RECORDED PHONE CALLS BETWEEN THE OLDER SUSPECT AND INTERCEPTED BY A RUSSIAN WIRE-TAP IN 2011. THE TWO ALLEGEDLY TALKED ABOUT JIHAD...RAISING RUSSIA'S CONCERNS. BUT RUSSIA ONLY RELAYED THOSE DETAILS LAST WEEK. 3 AFTER THOSE 3 PHONE CALLS, THE OLDER SUSPECT TRAVELED TO RUSSIA LAST YEAR, A KEY SIX-MONTH VISIT WHEN OFFICIALS BELIEVE HE RADICALIZED. 3